The Neglected Pt−N(sulfonamido) Bond in Pt Chemistry. New Fluorophore-Containing Pt(II) Complexes Useful for Assessing Pt(II) Interactions with Biomolecules
作者:Anna Maria Christoforou、Patricia A. Marzilli、Luigi G. Marzilli
DOI:10.1021/ic0606375
日期:2006.8.1
data establish that Pt(DNS-dien) has a Pt-C8 bond and a Pt-N(sulfonamido) bond. Pt(DNSH-dien)Cl and [Pt(DNSH-tren)Cl]Cl bind to N7 of 6-oxopurines (e.g., 5'-GMP, 3'-IMP, and 9-ethylguanine) and sulfur of methionine (met). Competition and challenge reactions for Pt(II) with met and 5'-GMP typically reveal that met binding is favored kinetically but that 5'-GMP binding is favored thermodynamically. This
用DNSH-tren处理顺式Pt(Me2SO)2Cl2可得到[Pt(DNSH-tren)Cl] Cl和DNSH-dienH,在越来越基本的条件下,导致Pt(DNSH-dienH)Cl(2),Pt (DNSH-dien)Cl和Pt(DNS-dien)。(DNSH = 5-(二甲基氨基)萘-1-磺酰基,通过磺酰胺基与三(2-氨基乙基)胺(DNSH-tren)和二亚乙基三胺(DNSH-dienH)连接; DNSH-dienH中的H表示质子有时会丢失在Pt结合时,即dienH部分的磺酰胺NH和DNSH部分的H8)。三种中性DNSH-dienH-衍生的复合物分别是双官能的,单官能的和无官能的,并且随着丹磺酰基基团到Pt的距离的减小,荧光依次递减。2D NMR数据确定Pt(DNS-dien)具有Pt-C8键和Pt-N(磺酰胺基)键。Pt(DNSH-dien)Cl和[Pt(DNSH-tren)Cl] C